Abstract: In this paper, based on the linear biased estimates in the present literature, we propose and discuss the universal ridge estimates which is a unitary expression.

Key words: universal idge estimate, mean squared error, linear model, admissibi-lity, principal component estimate

摘要： 本文介绍了文献中常见的线性有偏估计,在此基础上提出和讨论了回归系数的泛岭估计,它是常见线性有偏估计的统一表达形式。

关键词: 泛岭估计, 均方误差, 线性模型, 可容许性, 主成份估计